Malicious PDF — malware analysis report

Static analysis result for SHA-256 801b1f0af1236e08…

MALICIOUS

PDF

38.7 KB Created: 2020-11-07 01:11:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 9c031a50910a151c789b3723c20c12bb SHA-1: 59ed6899258e2742ad3070679ddc98465990e3bd SHA-256: 801b1f0af1236e082bf37966f6e76e340b7545b2998ee13fc5d059a4c59b2346
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/aws?keyword=knuffle+bunny+free+pdf In PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/5348160.pdfIn PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/vixuko-simetatosox-sowoxagifibixug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sebuwisawos.files.wordpress.com/2020/11/fipupojuretis.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/82567396520.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/wikusobuxebivo.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/58621063881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d86bebe-779b-4e4c-bc3f-0f58292eda76/e_lyco_felix_landreau.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/guess_the_language_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/57479489125.pdfIn PDF document text
    • https://lixuzab.files.wordpress.com/2020/11/otogi_spirit_agents_gift_code.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/answer_keys_for_math.pdfIn PDF document text
    • https://zapawex.files.wordpress.com/2020/11/6977250327.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/applied_hydrology_2nd_edition_chow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ad511be-7e4f-43f3-aea6-dfdb894a29ad/rujalapu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E9 4856 bytes
SHA-256: 32074c3661a893d6de85288bfd04272ae1452b28b445d12d5c8f8ba70a8a9fb8
font_01_sfnt_off00006885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6885 10968 bytes
SHA-256: 4e27fc05b286a4feea1dab1c835506ce53cf6d56d859d11f5000399f942fd4e9